Permutation-lock.



C. H. HIPP.

PERMUTAUON `LocKt APPLICATION FILED DEC.2. l9l6.

1,237,906.. l Patented Aug. 21, 1917.

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Wl TNESSES W m m44 4334546 Armen/frs authorized persons.

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onARLEs HENRY HIPROE FORT rrERRY, NEW YORK.

rERMU'rATroN-Looni To all whom 'it may concern: y

`Be it known that I, CHARLES H'. Hirn, a citizen of the United States,and a resident ofFort Terry, in the county of Suffolk and State of NewYork, have invented a new and Improved Permutation-Lock, of `which thefollowingl is a full, clear, and exact `de scription. y c

The object of the invention is to provide a new and improved permutationlockk more especially designed for lockingithe steering shaft of anautomobile, motor cycle,'bicycle or like machine` against turning by'un- Another object is to lock vwhich will be diflicult provide such vabe successfully manipulated to `pick or to by an unauthorized person. f

`In order to accomplish the Idesired result, use is made of a xedmember, a knob mounted concentrically relative to the said fixed memberand "adapted to be rotated by the operator when unlocked, andspringpressed locking pins mounted on the'said knob and in engagementmember', ythe said locking with the said fixed pins and the said sundryof the said locking pins being in locking engagement with kthe saidfixed member and whenpressed moving out of locking position, and theremaining` locking pins being in unlocked position relative to the saidfixed member and when pressed moving into locking position relativetothe iixed member.

A practical embodiment of the inventionl is lrepresented in `theaccompanying drawings forming a part ofethis specification, in whichsimilar characters of Areference indi-` cate corresponding` parts in allthe views.

Figure 1 is a sectional side lelevation of the locking device as appliedto the steering shaft of anr automobile, parts being shown` inelevation; y, i l

f Fig. 2 is a sectional plan view of the same on the line 2-2 of Fig.1;` i

Fig.` 3 is a cross section of the same on the line 3--3 of Fig. 2andwith parts shown in elevation; y n y Fig. 4 is an edgeview `of the`fixed membei' forming the `cover for the knob; l.

means and e Patented Aug. ai, i917.

y Application filed December 2, 1916. Serial No. 134,609.

The lock is shown appliedy to the steering shaft 10 of an automobile,motor cycleor other machine, the said steering shaft extending throughthe usual lsteering; post or housing 11. On the steering shaft 10 issecured a locking member 12 in theform of a sleeve fastened in place bya key 13 or other fastening means, and thelower end of the lockingmember 12 is provided with teeth 14 adapted to be engaged bycorresponding teeth `1.5 formed in a movable locking mem ber 16 likewisein the shape of a sleeve mounted to slidey up and down on the steeringshaft 10. The movable member 16 is provided with guide ribs 17 engagingguideways 18 formed in a casing 19 attached to or forming part of thehousing 11. By the arrangement described the locking member 16 is guidedVin its up and down movement without danger rof turning.

The movable locking member 16 is provided at one side with spaced lugs25 between which extends a pin 26 working in a curved slot 26a'in thecasing 19 and held,

eccentrically on thev inner end of a knob 27 mounted to turn on a stud28 screwed or otherwise fastened' to the casing 19. On turning the knob27 the pin 26 imparts an up or down sliding movement to the movablelocking member 16 according to the direction in which the knob 27 isturned at the time. When the locking sleeve 16 is moved, upward then itsteeth 15 move into engagement with the teeth 14 of the fixed locking`member 12 so that the locking member and consequently the steeringshaft 10 is held locked against turning. Vhen the movable locking member16.is moved downward its teeth lswing out of engagement with the teeth14 thus unlocking the member 12 and the steering shaft 10- to permitturning of the same in the usual manner for steering purposes.

` The knob 27l is made hollow andinto its tures 37 formed in the disk 30to allow of inbefhad by kWay of aper.

rfio

lnostloit '44 s of a the width of the iange'4Q and' the bit is serting ascrewdriver or a similar tool for unscrewing the screws 36 Whenever thedisk 30 is 1n unlocked positionand itls'deslred with an annular flange4.()having semicircular notches 41 formed at its edge-and spaced equaldistances apart. The notches 41 are adapted to be engaged by `the innerends of lock-ingpins 42 mounted to slide radially in the knob 27 and the.outerv endsof the said pins 42 project beyond the peripheral faCe ofthe knob 27 .to permit the user to press the pins for the purposehereinafter morey fully explained. Each of the ypins'42 is provided witha fiat portion or a shank 43 and-the inner end of each pin is providedwith two bits 44 and 45 made sernircylindrical and disf poseddiametrically opposite each other, one in front of the other thusforming. notches 46 V and 47 likewise diametrically opposite eachzother,as plainly indicated in Figs. 2 and.

, The flat shank 43 of each pin 4215 engaged at its outer end by awasher 50 seated on the inner face `of the rim of the knob 27, and onthe said washer 50 rests the outer end of spring 51 coiled on the shank43 yand resting Wthits inner end on a ring 52 pro-vided with notches 53stlftddlng the inner enfle? Q the shanks 43 of the several pins'g42. Bythe use of the springs 51 the pins 42 are normally heldin outermostposition. vThe inner ends of the pins 42 are mounted to Slide n abearing 54 formed in the knob 2 7, and the arrangement is Such thattheinnerwidth corresponding to adapted to fit into a corresponding notch.41

at the time a pin 42 is` in the position as shown in the upper portionof Fig. 2, that is,

withthebit 44 outward yand the bit 45 i`nward. A pin 42v in thisposition locks the knob 27 against rotation on the' disk 30. The user ofthe lock, however, cany set any one yoft the pins in a reverse directionso that the bit 44 is inward and the bit 45 outward 21S. indicated inthe lower portion of Fig- 2 Inthie oase the notch 46 iS in register withthe corresponding 11013911 41`ofthe flange40 andthe pin 42 is now inlocking position relative to the disk 30, but when this pin is pressed.inward then thebt r45 moves into register with 'the ,Correspond-ingnotch 4l thus locking the knob 27 against turning on thedisk 30, yTheperipheralface "of the Iniob 27 iS provided Withv .oonselontfe nemer alsarranged, alongside the Corresponding pins 42, es shown in Fig. l. Bvvthe use of the numerals the pins are quickly identified by the user kotthe locking device, andthe l user can yreadily set the pins into anyoneof the two' positions mentioned d and shown in the upperfand lowerportions of Figo? Se three of? the pins are set to this position 1 whilethe remaining pins are set to the posithat any desired combination canbe made, it

being, however, understood that, at least, one

tion shown in the lower portion of Fig. 2;

It will be noticed that normally the knob 27 is held against turning onthe disk 30. When it is desired to lock the steering shaft 10 againstturning, it is necessary `for the operator to press kthe pins whichr areset in thelocking position shown in the upper portion of Fig, 2 so thatthe ybits 44 move out of engagement with the corresponding notches 41and the recesses 47 move in register with the flange 40 thus permittingthe knob 27 to be turned. When the knob is turnedl with the locking pin42 in pressed position, the locking member 16 is engaged with thesleevel2 andV when this vposition has been reached the operator releasesthe lpressed pins so that the latter return to locked position relativeto the corresponding notches 41. It is understood that the turningmovement of the 'knob 27 corresponds to thedistance between adjacentnotches 41 so that the pins 42 have their inner ends in vregister withthe notches 41 after the knob has been turned to engagethe lockingmember 16 with the locking member 12(v As soon as the pressed pins 42are released their springs 51 returnthe saine to outermost position andin doing so the bits 44 move back into rengagement with thecorresponding notches 41 thus locking the knob 27 againstturning onthedisk 30. In will be noticed that if an unauthorized person shouldattempt to unlock the steering shaftvlO` and pressesvsome ot the pins, say `any one that `is in the position shown inthelow'er portion ofpFig.2,*then the VCorresponding bit 45'moves into engagement with thecorresponding notch 41 thus providing anotherv locking lmeans forholding the knob 27 againstturning. F rom the foregoing it will be seen'that the unauthorized person could only rotate the knob .27 when thepins which are in the locking position shown in the upperportion of Fig.2 are simultaneously pressed.4 yFrom the fore- 115 going it willalso beseen that the pin that is in locked positionwhen pressed movesintovunlocking position, but the ypin that is in unlocked 'position whenypressed moves into locking position.

' The user ofthe lockl can 'v readilychange the position of the pins 42kto suit hisown convenience, and in order to do so itis only necessary'lfor-the operator to first remove thek screws 36 to allow the removal ofthe 125y gagement relative to the flange 4() as shown in the upperportion of Fig. 2 or into locking position as shown in the lower'portion of Fig. 2. When this has been done the several parts arerfc-assembled and the screws 86 are screwed up to fasten there-assembled parts in position.

Having thus described my invention, I claim as new and desire to secureby Letters Patent i.. A permutation lock, comprising a stud, a knobmounted to turn on the stud, a fixed locking disk around which turns thesaid knob, and spring-pressed locking pins `mounted to slide radiallyinthe said knob and having their outerends projecting outwardly from theperipheral face of the knob, the inner ends of the said locking pinshaving two diametrically opposite locking bits, one in front of theother, and the said fixed locking` disk having integral means adapted tobe engaged by the locking bit in active position at the time.

2. A permutation loclnfcomprising a stud, a knob mounted to turn on thestud, a fixed locking disk around which turns the said knob,spring-pressed locking pins mounted to slide radially in the said knoband having their outer ends projecting outwardly from the peripheral aceof the mob, the in ner ends of the said locking pins having twodiametrically opposite locking bits one in 'front of the other and thesaid fixed locking disk having integral means adapted to be engaged bythe locking bit in active position at the time, and means mounted in theknob and engaging the said pins to hold the latter againstturning.

3. A permutation lock, comprising a stud, `a knob mounted to turn on thestud, a lo`cking disk held removable on the said stud and extendingwithin the said knob, the said disk having a circular iange and providedwith notches, and spring-pressed pins slidable radially in the said knoband having their inner ends provided with bits Gomes of this patent maybe obtained for adapted to engage the said notches to lock the knobagainst turning, the pins having flat portions and a notched member inthe knob and engaging the flat portions to hold the pins againstturning.

4. A permutation lock, comprising a stud, a knob mounted to turn on thestud, a locking disk held removable on the said stud and extendingwithin the said knob, the said disk having a circular flange providedwith notches, spring-pressed pins slidable radially in the said knob andhaving their inner ends provided with two bits one in front of the otherand located diametrically opposite each other, one of the bits of a pinbeing in operative position at a time relative to a corresponding notchin the said disk flange, sundry of the pins having their outermost bitsnormally in engagement with the corresponding notches and when pressedmoving out of engagement, the remaining pins having their outer bitsnormally out of engagement with the corresponding notches and on beingpressed having their rear bits moving into engagement with thecorresponding notches, and means for preventing the pins from turning.

5. In a permutation lock, a hollow knob mounted to turn, a fixed diskextending in the said hollow knob and having a circular flange providedwith notches, springpressed pins mounted to slide radially in the saidknob, the inner end of each pin being provided with two bits arrangeddianietrically opposite each other and one in front of the other, thesaid bits being adapted to fit the said notches, and means to hold thepins against turning. y

6In a permutation lock, a locking pin having a iiat shank and providedat its in ner end with two semi-cylindrical bits arranged on oppositesides adjoining eagch Vother and extending in the direction of length ofthe pin, one of the said bits Jforming the terminal of said pin.

CHARLES HENRY HIPP.

ve cents each, by addressing the Commissioner of I'atents, Washington,D. C,

